Kirill Yando (left) & Daniel Yaptunay, Nenets reindeer herders, place pale reindeer skins on the ground close to their herd. The pale skins attract warble flies which they then kill when they land on the fur. Warble flies are a major parasite of reindeer. Gyda, Tazovsky region, Yamal, Siberia, Russia

RY.2610-27

Daniel Yaptunay,a Nenets reindeer herder, places a pale reindeer skin on the ground close to the herd. The pale skin attract warble flies which he then kills when they land on the fur. Warble flies are a major parasite of reindeer. Gyda, Tazovsky region, Yamal, Siberia, Russia

RY.2611-01

Kirill Yando,a Nenets reindeer herder, places a pale reindeer skin on the ground close to the herd. The pale skin attract warble flies which he then kills when they land on the fur. Warble flies are a major parasite of reindeer. Gyda, Tazovsky region, Yamal, Siberia, Russia

RY.2611-02

Igor Salinder,a Nenets reindeer herder, places a pale reindeer skin on the ground close to the herd. The pale skin attract warble flies which he then kills when they land on the fur. Warble flies are a major parasite of reindeer. Gyda, Tazovsky region, Yamal, Siberia, Russia

RY.2611-03

Igor Salinder,a Nenets reindeer herder, places a pale reindeer skin on the ground close to the herd. The pale skin attract warble flies which he then kills when they land on the fur. Warble flies are a major parasite of reindeer. Gyda, Tazovsky region, Yamal, Siberia, Russia

RY.2607-15

Photographer Bryan Alexander, wearing a head net for protection against mosquitoes while photographing on a hot summer day in the Tazovsky region of the Gydan Peninsula, Yamal, Siberia

QQ.0232-25

A sled dog has boots tied on to protect its feet from the sharp ice crystals of early summer. Northwest Greenland.

QQ.0233-30

A sled dog has boots tied on to protect its feet from the sharp ice crystals of early summer. Northwest Greenland.

SZ.1017-01

Barnacle Geese and goslings, some under the wing of the sitting bird. Esturine shore. Spitsberged

SZ.1017-02

Two Barnacle Geese and goslings, nestling under the wing of the sitting bird. Esturine shore. Spitsberged

QQ.0246-21

Eqilana Simigaq, an Inuit woman, carries her son in a sealskin amaut.Qeqertat, Northwest Greenland

POD0037-00

Polar bear mother and her very small cub on summer sea ice. Spitsbergen.